ltdl-helper.c

/* $Id: ltdl-helper.c 1971 2007-10-28 19:13:50Z lennart $ *//*** This file is part of PulseAudio. Copyright 2004-2006 Lennart Poettering Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB PulseAudio is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. PulseAudio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with PulseAudio; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.***/#ifdef HAVE_CONFIG_H#include <config.h>#endif#include <stdlib.h>#include <ctype.h>#include <pulse/xmalloc.h>#include <pulse/util.h>#include <pulsecore/core-util.h>#include <pulsecore/macro.h>#include "ltdl-helper.h"
pa_void_func_t pa_load_sym(lt_dlhandle handle, constchar *module, constchar *symbol) {
char *sn, *c;
pa_void_func_t f;
pa_assert(handle);
pa_assert(module);
pa_assert(symbol);
if ((f = ((pa_void_func_t) (long) lt_dlsym(handle, symbol))))
return f;
/* As the .la files might have been cleansed from the system, we should * try with the ltdl prefix as well. */
sn = pa_sprintf_malloc("%s_LTX_%s", module, symbol);
for (c = sn; *c; c++)
if (!isalnum(*c))
*c = '_';
f = (pa_void_func_t) (long) lt_dlsym(handle, sn);
pa_xfree(sn);
return f;
}